Looks as if it was made by a sharp edge of something in metal.
看起来好像是什么金属东西的锋利边缘割的。
Be careful—it has a sharp edge.
小心点—这刀刃很锋利。
这把斧头的刃口锋利。
Meg:You must have caught it on a sharp edge.
美格：一定是给什么尖锐的东西刺到弄破了。
This gave his work a sharp practical edge.
这给他的工作提供了一个明显的实践优势。
"A sharp knife edge." The knife says.
“口锋要锐利”刀子说。
这把剪子非常锋利。
这把剪子非常锋利。
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